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setup.py
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setup.py
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#!/usr/bin/env python
#
# Script to build and install Python-bindings.
# Version: 20230909
from __future__ import print_function
import copy
import datetime
import glob
import gzip
import platform
import os
import shlex
import shutil
import subprocess
import sys
import tarfile
import zipfile
from distutils.ccompiler import new_compiler
from setuptools import Extension
from setuptools import setup
from setuptools.command.build_ext import build_ext
from setuptools.command.sdist import sdist
if (sys.version_info[0], sys.version_info[1]) < (3, 7):
print(("Unsupported Python version: {0:s}, version 3.7 or higher "
"required.").format(sys.version))
sys.exit(1)
class custom_build_ext(build_ext):
"""Custom handler for the build_ext command."""
def _RunCommand(self, command):
"""Runs the command."""
arguments = shlex.split(command)
process = subprocess.Popen(
arguments, stderr=subprocess.PIPE, stdout=subprocess.PIPE,
universal_newlines=True)
if not process:
raise RuntimeError("Running: {0:s} failed.".format(command))
output, error = process.communicate()
if process.returncode != 0:
error = "\n".join(error.split("\n")[-5:])
raise RuntimeError("Running: {0:s} failed with error:\n{1:s}.".format(
command, error))
return output
def build_extensions(self):
"""Set up the build extensions."""
# TODO: move build customization here?
build_ext.build_extensions(self)
def run(self):
"""Runs the build extension."""
compiler = new_compiler(compiler=self.compiler)
if compiler.compiler_type == "msvc":
self.define = [
("_CRT_SECURE_NO_WARNINGS", ""),
("UNICODE", ""),
]
else:
command = "sh configure --disable-nls --disable-shared-libs"
output = self._RunCommand(command)
print_line = False
for line in output.split("\n"):
line = line.rstrip()
if line == "configure:":
print_line = True
if print_line:
print(line)
self.define = [
("HAVE_CONFIG_H", ""),
]
build_ext.run(self)
class custom_sdist(sdist):
"""Custom handler for the sdist command."""
def run(self):
"""Builds a source distribution (sdist) package."""
if self.formats != ["gztar"] and self.formats != ["zip"]:
print("'setup.py sdist' unsupported format.")
sys.exit(1)
if glob.glob("*.tar.gz"):
print("'setup.py sdist' remove existing *.tar.gz files from "
"source directory.")
sys.exit(1)
command = "make dist"
exit_code = subprocess.call(command, shell=True)
if exit_code != 0:
raise RuntimeError("Running: {0:s} failed.".format(command))
if not os.path.exists(self.dist_dir):
os.mkdir(self.dist_dir)
source_package_file = glob.glob("*.tar.gz")[0]
source_package_prefix, _, source_package_suffix = (
source_package_file.partition("-"))
sdist_package_file = "{0:s}-python-{1:s}".format(
source_package_prefix, source_package_suffix)
sdist_package_file = os.path.join(self.dist_dir, sdist_package_file)
os.rename(source_package_file, sdist_package_file)
# Create and add the PKG-INFO file to the source package.
with gzip.open(sdist_package_file, "rb") as input_file:
with open(sdist_package_file[:-3], "wb") as output_file:
shutil.copyfileobj(input_file, output_file)
os.remove(sdist_package_file)
self.distribution.metadata.write_pkg_info(".")
pkg_info_path = "{0:s}-{1:s}/PKG-INFO".format(
source_package_prefix, source_package_suffix[:-7])
with tarfile.open(sdist_package_file[:-3], "a:") as tar_file:
tar_file.add("PKG-INFO", arcname=pkg_info_path)
os.remove("PKG-INFO")
with open(sdist_package_file[:-3], "rb") as input_file:
with gzip.open(sdist_package_file, "wb") as output_file:
shutil.copyfileobj(input_file, output_file)
os.remove(sdist_package_file[:-3])
# Convert the .tar.gz into a .zip
if self.formats == ["zip"]:
zip_sdist_package_file = "{0:s}.zip".format(sdist_package_file[:-7])
with tarfile.open(sdist_package_file, "r|gz") as tar_file:
with zipfile.ZipFile(
zip_sdist_package_file, "w", zipfile.ZIP_DEFLATED) as zip_file:
for tar_file_entry in tar_file:
file_entry = tar_file.extractfile(tar_file_entry)
if tar_file_entry.isfile():
modification_time = datetime.datetime.fromtimestamp(
tar_file_entry.mtime)
zip_modification_time = (
modification_time.year, modification_time.month,
modification_time.day, modification_time.hour,
modification_time.minute, modification_time.second)
zip_info = zipfile.ZipInfo(
date_time=zip_modification_time,
filename=tar_file_entry.name)
zip_info.external_attr = (tar_file_entry.mode & 0xff) << 16
file_data = file_entry.read()
zip_file.writestr(zip_info, file_data)
os.remove(sdist_package_file)
sdist_package_file = zip_sdist_package_file
# Inform distutils what files were created.
dist_files = getattr(self.distribution, "dist_files", [])
dist_files.append(("sdist", "", sdist_package_file))
class ProjectInformation(object):
"""Project information."""
def __init__(self):
"""Initializes project information."""
super(ProjectInformation, self).__init__()
self.include_directories = []
self.library_name = None
self.library_names = []
self.library_version = None
self._ReadConfigureAc()
self._ReadMakefileAm()
@property
def module_name(self):
"""The Python module name."""
return "py{0:s}".format(self.library_name[3:])
def _ReadConfigureAc(self):
"""Reads configure.ac to initialize the project information."""
with open("configure.ac", "r", encoding="utf-8") as file_object:
found_ac_init = False
found_library_name = False
for line in file_object.readlines():
line = line.strip()
if found_library_name:
library_version = line[1:-2]
self.library_version = library_version
break
elif found_ac_init:
library_name = line[1:-2]
self.library_name = library_name
found_library_name = True
elif line.startswith("AC_INIT"):
found_ac_init = True
if not self.library_name or not self.library_version:
raise RuntimeError(
"Unable to find library name and version in: configure.ac")
def _ReadMakefileAm(self):
"""Reads Makefile.am to initialize the project information."""
if not self.library_name:
raise RuntimeError("Missing library name")
with open("Makefile.am", "r", encoding="utf-8") as file_object:
found_subdirs = False
for line in file_object.readlines():
line = line.strip()
if found_subdirs:
library_name, _, _ = line.partition(" ")
self.include_directories.append(library_name)
if library_name.startswith("lib"):
self.library_names.append(library_name)
if library_name == self.library_name:
break
elif line.startswith("SUBDIRS"):
found_subdirs = True
if not self.include_directories or not self.library_names:
raise RuntimeError(
"Unable to find include directories and library names in: "
"Makefile.am")
project_information = ProjectInformation()
CMDCLASS = {
"build_ext": custom_build_ext,
"sdist": custom_sdist}
SOURCES = []
# TODO: replace by detection of MSC
DEFINE_MACROS = []
if platform.system() == "Windows":
DEFINE_MACROS.append(("WINVER", "0x0501"))
# TODO: determine how to handle third party DLLs.
for library_name in project_information.library_names:
if library_name != project_information.library_name:
definition = "HAVE_LOCAL_{0:s}".format(library_name.upper())
DEFINE_MACROS.append((definition, ""))
# Put everything inside the Python module to prevent issues with finding
# shared libaries since pip does not integrate well with the system package
# management.
for library_name in project_information.library_names:
for source_file in glob.glob(os.path.join(library_name, "*.[ly]")):
generated_source_file = "{0:s}.c".format(source_file[:-2])
if not os.path.exists(generated_source_file):
raise RuntimeError("Missing generated source file: {0:s}".format(
generated_source_file))
source_files = glob.glob(os.path.join(library_name, "*.c"))
SOURCES.extend(source_files)
source_files = glob.glob(os.path.join(project_information.module_name, "*.c"))
SOURCES.extend(source_files)
# TODO: find a way to detect missing python.h
# e.g. on Ubuntu python-dev is not installed by python-pip
setup_args = dict(
cmdclass=CMDCLASS,
ext_modules=[
Extension(
project_information.module_name,
define_macros=DEFINE_MACROS,
include_dirs=project_information.include_directories,
libraries=[],
library_dirs=[],
sources=SOURCES
)
]
)
setup(**setup_args)